The impact of tourism on the environment, in general and specifically on the climate, is receiving plenty of attention. In 2008, the Centre for Sustainable Tourism and Transport of NHTV Breda University of Applied Sciences and NRIT Research, in collaboration with NBTC-NIPO Research, published the (Dutch) pilot report ‘Travelling large in 2005’. In this report the environmental impact of Dutch holiday behaviour was calculated. The carbon footprint was one tool used for this: the emissions of carbon dioxide are largely responsible for climate change. For the first time we now present a detailed report on the carbon footprint of inbound tourism in 2009 and roughly compare the results with the carbon footprint of outbound tourism in the same year.